Across 250 sampled CPU payloads, `delta_c_estimate` stayed in a tight interior band around 2.05 to 2.25, nearly all deep runs reached N=1024 or N=2048 with vanishing bracket widths around 4.18e-12 or 4.00e-15, `last_split_fraction` was usually 1.0 and only occasionally 0.875 in otherwise sharp deep runs, `last_gap_ratio` stayed comfortably above the 3.0 criterion at about 5.1 to 18.8, and `last_boundary_error` stayed tiny while `last_inner_band_width` held around 2.23 to 2.43.